Concrete-structure stiffener.



W. J. CONNELL & A. F. DIGKEY.

CONCRETE STRUCTURE STIFFENER.

APPLICATION FILED Nov. 22, 1911.

1,024,312. Patented Apr. 23, 1912.

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W. J. GONNBLL & A. P. DIGKEY.

CONCRETE STRUCTURE STIFFENER.

APPLIUATION FILED NOV. 22, 1911.

Patented Apr. 23, 1912.

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WILLIAM J. GONNELL AND ALBERT F. DIGKEY, OF HUNTINGTON, WEST VIRGINIA.

CONCRETE-STRUCTURE STIFFENER.

Specification of Letters Patent.

Application filed November 22, 1911.

Patented Apr. 23, 1912. Serial No. 661,822.

To all whom it may concern:

Be it known that we, lVJLLIAM J. CON- NELL and ALBERT F. DIOKEY,citizens of the United States, residing at Huntington, in the county ofCabell and State of West Virginia, have invented new and usefulImprovements in Concrete-Structure Stifteners, of which the following isa specification.

The invention relates to stiffener structures and more particularly tothe class of column girder reinforcing medium.

The primary object of the invention is the provision of a medium forconcrete structures in which a column and girder of concrete will besecurely joined and stiffened at the points of juncture thereof, thusobviating possibility of displacement, cracking or breaking of thecolumn and girder and insuring strength to the same.

Another object of the invention is the provision of a medium of thisnature in which the tensioning rods in the concrete girders may befastened in the concrete column joined thereto for the bonding of thesame and both of which will be materially stiffened for reinforcingthem.

A further object of the invention is the provision of a medium of thischaracter which is simple in construction, reliable and eflicientin itspurpose and inexpensive in manufacture.

With these and other objects in view the invention consists in theconstruction, combination and arrangement of parts, as will behereinafter more fully described in detail, illustrated in theaccompanying drawings and pointed out in the claims hereunto appended.

In the drawings; Figure 1 is a perspective view of a st-ifienerconstructed in accordance with the invention and shown applied to aconcrete column and two-way girders, the column and girders being shownin dotted lines together with the reinforcing and tensioning rodsvusedtherein; Fig. 2 is a top plan view thereof; Fig. 3 is a view similar toFig. 1 showing a slight modification of the invention and applied tothree-way girders; Fig. 4 is a top plan view thereof; Fig. 5 is a viewsimilar to Fig. 1 showing a further modification of the invention andapplied to four-way girders; Fig. 6 is a top plan view thereof.

Similar reference characters indicate corresponding parts throughout theseveral views of the drawings.

Referring to Figs. 1 and 2 of the drawings, the stiffener comprises anL-shaped metallic bar lOthe same being embedded within the verticallydisposed concrete column 11, the bar 10 being of any desirable lengthand has its angular portions 12 dis posed parallel with two sides of thesaid column, the angular portions 12 medially of their length beingformed with outwardly extending wings or extensions 13 provided withreversely outturned cars 14, the wings or extensions 13 projecting intothe horizontally disposed concrete girders 15 which are joined to thecolumn 11 in the usual manner, the ears 14 serving as anchors for thewings or extensions 13 embedded within the girders. The wings orextensions 13 are provided with openings 16 which permit the concreteforming the girders 15 to fill in the said perforations 16 for theholding fast of the wings or extensions in the girders. Slidably mountedupon the L-shaped bar 10 and adapted to rest upon the upper edges of thewings or extensions 13 is a square plate 17, the same being providedwith an irregular shaped open center 18, the plate 17 being embeddedthroughout the area in the column 11 and near the corners thereof areformed openings 19 through which project vertical reinforcing rods 20embedded in the column 11 near the corners of the same, the bar 10 beingprovided with openings 21 in which are engaged the hook like ends 22 ofthe truss or tensioning rods 23 embedded in the girders 15 as usual,thus it being seen that the said girders will be securely joined withthe vertical column 11 and materially strengthened and stiffened at thepoints of juncture thereof.

In Figs. 3 and 4 there is shown a slight modification of stiffenerwherein a T-shaped bar 24 is embedded centrally within the verticalcolumn 11 and is longitudinally disposed therethrough, the T-shaped barbeing of any desirable length and is constructed from metal, the angleportion 25 of the bar 24 being formed with outwardly extending wings orextensions 26 provided with reversely outbent anchoring ears 27, thewings or extensions 26 being embedded in the girders 15 and are providedwith openings 28 which permit the setting of the concrete forming thegirders 15 for holding fast, the wings or extensions 26 therein. Theangular portions 25 of the bar 24 are provided with perforations 29receiving the hook ends 30 of the truss or tensioning rods 31 embeddedin the girders 15 in the ordinary manner. Slidably mounted upon theT-shaped bar 24 is a plate 32, the same resting upon the upper edges ofthe wings or extensions 26 and is formed with an irregular shaped opencenter 33 and also provided with the openings 34 receiving thereinforcing rods 35 embedded in the column 11, thus it being seen thatthe three-way girders 15 will be securely united to the column 11 andboth the latter and the said girders will be materially strengthened aswill be obvious.

In Figs. 5 and 6 there are shown still further modifications of theinvention wherein the stiffener comprises a substantially X- shaped bar36 the same being embedded centrally in the column 11 longitudinallythereof, the angle portion 38 of said bar having cut therefrom outturnedears 39 provided with perforations 40 through which are passed thereinforcing rods 41 embedded within the said column 11. The angularportion 38 of the bar 36 being provided with the wings 42 indentical tothe wings or extensions shown in Figs. 1 to 4 in the drawings andhereinbefore described. Also the angular portions 38 of said bar 36 areprovided with the openings 43 receiving the hook terminals 44 of thetruss or tensioning bars 45 embedded within the girders 15 which arearranged as four-way girders. It is evident that the column 11 and thegirders 15 will be securely connected together and materially stiffenedor reinforced at the points of juncture with each other.

From the foregoing it is thought that the construction and operation ofthe inven- Wardly projecting wings formed on the bar and adapted to beembedded in the ends of concrete girders joining and at substantiallyright-angles to such column, reversely outturned anchoring ears on theends of the wings, and a plate surrounding the bar and resting on thewings and adapted to receive reinforcing rods within such column.

2. In a concrete stiffening medium a bar adapted to be embedded in acolumn, outwardly projecting wings formed on the bar and adapted to beembedded in the ends of concrete girders joining and at substantiallyright-angles to such column, reversely outturned anchoring ears on theends of the wings, a plate surrounding the bar and resting on the Wingsand adapted to receive reinforcing rods within such column, the said barbeing provided with perforations adapted to receive truss-rods embeddedin said girders.

3. In a concrete stiffener a bar of angular contour adapted to beembedded in a column, outwardly projecting wings formed on and extendingbeyond the free longitudinal edges of said bar and adapted to beembedded in the ends of concrete girders joining and at substantiallyrightangles to such column, and reversely out-turned anchoring ears onthe ends of said wings the said wings being of less depth than saidgirders and provided with openings for locking engagement in thegirders.

In testimony whereof we affix our signatures in presence of twoWitnesses.

WILLIAM J. CONNELL. ALBERT r. DIGKEY.

Witnesses:

J. N. Porrs, T. F. EAKMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

